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Aeration apparatus and method
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Patent number 4,981,622
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Issue date Jan 1, 1991
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Nigrelli Systems, Inc.
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Nicholas B. Nigrelli
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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-
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Inclined tubular aeration apparatus
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Patent number 4,474,713
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Issue date Oct 2, 1984
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Hydraulic & Heavy Equipment, Inc.
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Dean Wickoren
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C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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-
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Water aerator and method
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Patent number 4,255,360
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Issue date Mar 10, 1981
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Kerry P. Jeffries
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C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Cooling apparatus
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Patent number 4,226,815
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Issue date Oct 7, 1980
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Haggie I. Cockman
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F28 - HEAT EXCHANGE IN GENERAL
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Water purification system
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Patent number 4,172,767
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Issue date Oct 30, 1979
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Walter E. Sear
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C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Spray cooling system
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Patent number 4,085,171
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Issue date Apr 18, 1978
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Bird Machine Company, Inc.
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Donald B. Baker
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F28 - HEAT EXCHANGE IN GENERAL
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Water cooling arrangement
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Patent number 3,983,192
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Issue date Sep 28, 1976
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Ingersoll-Rand Company
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Robert J. Stoker
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F28 - HEAT EXCHANGE IN GENERAL
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3869087
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Patent number 3,869,087
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Issue date Mar 4, 1975
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F28 - HEAT EXCHANGE IN GENERAL
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3719353
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Patent number 3,719,353
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Issue date Mar 6, 1973
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F28 - HEAT EXCHANGE IN GENERAL
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3622074
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Patent number 3,622,074
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Issue date Nov 23, 1971
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F28 - HEAT EXCHANGE IN GENERAL
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3235877
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Patent number 3,235,877
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Issue date Feb 15, 1966
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F28 - HEAT EXCHANGE IN GENERAL
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3135466
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Patent number 3,135,466
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Issue date Jun 2, 1964
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A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
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3101173
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Patent number 3,101,173
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Issue date Aug 20, 1963
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B05 - SPRAYING OR ATOMISING IN GENERAL APPLYING LIQUIDS OR OTHER FLUENT MATER...
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2591100
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Patent number 2,591,100
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Issue date Apr 1, 1952
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F28 - HEAT EXCHANGE IN GENERAL
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1896202
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Patent number 1,896,202
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Issue date Feb 7, 1933
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F28 - HEAT EXCHANGE IN GENERAL
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1868632
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Patent number 1,868,632
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Issue date Jul 26, 1932
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F24 - HEATING RANGES VENTILATING
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1658533
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Patent number 1,658,533
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Issue date Feb 7, 1928
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F28 - HEAT EXCHANGE IN GENERAL
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1462363
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Patent number 1,462,363
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Issue date Jul 17, 1923
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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1383404
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Patent number 1,383,404
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Issue date Jul 5, 1921
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B05 - SPRAYING OR ATOMISING IN GENERAL APPLYING LIQUIDS OR OTHER FLUENT MATER...
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1289303
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Patent number 1,289,303
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Issue date Dec 31, 1918
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B05 - SPRAYING OR ATOMISING IN GENERAL APPLYING LIQUIDS OR OTHER FLUENT MATER...
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1233119
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Patent number 1,233,119
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Issue date Jul 10, 1917
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B05 - SPRAYING OR ATOMISING IN GENERAL APPLYING LIQUIDS OR OTHER FLUENT MATER...
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1186226
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Patent number 1,186,226
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Issue date Jun 6, 1916
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F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
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27853
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Patent number 27,853
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Issue date Apr 10, 1860
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F22 - STEAM GENERATION